X-ray marker



FIG. 1 is a front view of an x-ray marker showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a perspective view thereof.

The broken lines in FIGS. 1 and 6 are included for the purpose of illustrating a portion of the x-ray marker that forms no part of the claimed design. 

The ornamental design for an x-ray marker, as shown and described. 